U- Umbridge
V- veritaserum
W- Weasleys
X- Xenophilus
Y- Yule Ball
Z- Zacharius Smith ( or whatever his name was 8-S )
A- Anapneo.
B- Barty
C-Confundus.
D- dungeon
E-Evanesco.
F- floo powder
G- Gryffindor
H-Hufflepuff.
I- Igor
J-Jelly Legs Jinx
K- Knockturn Alley
L-Legilimens.
M- Muggle
N-Narcissa.